Polyphenol glycoside isolated from acerola

Abstract

It is an objective of the present invention to provide a polyphenol glycoside isolated from acerola, which has a binding mode that has not been conventionally known, and to provide the use of the same. The present invention relates to a compound represented by formula (I): and an antioxidant, a glucosidase inhibitor, a food, a cosmetic, and a skin preparation for external use, each of which comprises such compound.

1. An isolated compound represented by the following formula (I): 
       
         
           
           
               
               
           
         
         or a salt thereof. 
       
     
     
       2. A method for producing the isolated compound represented by formula (I) according to  claim 1 , comprising isolating the compound from an acerola fruit or a processed product thereof. 
     
     
       3. A glucosidase inhibitor comprising, as an active ingredient, an isolated compound represented by formula (I): 
       
         
           
           
               
               
           
         
         or a salt thereof in an amount effective for providing glucosidase inhibitory activity. 
       
     
     
       4. An antioxidant comprising, as an active ingredient, an isolated compound represented by formula (I): 
       
         
           
           
               
               
           
         
         or a salt thereof in an amount effective for providing antioxidative activity. 
       
     
     
       5. A food comprising an isolated compound represented by formula (I): 
       
         
           
           
               
               
           
         
         or a salt thereof in an amount effective for providing glucosidase inhibitory activity or antioxidative activity. 
       
     
     
       6. A cosmetic comprising an isolated compound represented by formula (I): 
       
         
           
           
               
               
           
         
         or a salt thereof in an amount effective for providing antioxidative activity. 
       
     
     
       7. A skin preparation for external use comprising an isolated compound represented by formula (I): 
       
         
           
           
               
               
           
         
         or a salt thereof in an amount effective for providing antioxidative activity. 
       
     
     
       8. An isolated mixture consisting essentially of a compound represented by formula (I): 
       
         
           
           
               
               
           
         
       
       or a salt thereof, and acerola-polyphenols.